<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Document</title>
</head>
<body>
	<div class="container">
		<form action="chess">
			<label>
				<input name="username" type="text" value="" placeholder="请输入用户名">
				<input type="submit" value="登陆" name="submit">
			</label>
		</form>
	</div>
</body>
</html>